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我的应用包含 5 个屏幕。在第一个屏幕中,我从服务器加载一些数据并在第二个屏幕的 ListView 中显示这些数据。在 ListView 中,我必须为每一行显示一个图像。这些图像是动态下载的,也被缓存了。下载在后台进行,我已经为 ListView 提供了 notifyDataSetChanged() 。
当下载正在进行时,我可以移动到其他 3 个屏幕。在这 3 个屏幕中,我有一个按钮具有相同的功能,即显示一个对话框,其中包含与我的第二个屏幕中相同的列表。
问题是当我从这个对话框中选择一个值时,比如 2 或 3 次,当前 Activity 消失并自动移动到我的第二页。
我无法确定其背后的原因。请查看我得到的日志。谁能告诉我为什么会出现这个问题?
> 08-25 10:44:31.505: WARN/AudioFlinger(2573): write blocked for 73 msecs, 92 delayed writes, thread 0x5e518
08-25 10:44:31.515: DEBUG/szipinf(17236): Initializing inflate state
08-25 10:44:31.635: INFO/DEBUG(16421): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
08-25 10:44:31.635: INFO/DEBUG(16421): Build fingerprint: 'samsung/GT-I9100/GT-I9100:2.3.3/GINGERBREAD/XWKE8:user/release-keys'
08-25 10:44:31.635: INFO/DEBUG(16421): pid: 17236, tid: 17236 >>> com.test.android <<<
08-25 10:44:31.635: INFO/DEBUG(16421): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr deadbaad
08-25 10:44:31.635: INFO/DEBUG(16421): r0 00000027 r1 deadbaad r2 a0000000 r3 00000000
08-25 10:44:31.635: INFO/DEBUG(16421): r4 00000001 r5 00000000 r6 bea102c0 r7 0000a000
08-25 10:44:31.635: INFO/DEBUG(16421): r8 00646278 r9 00030000 10 00000000 fp bea1022c
08-25 10:44:31.635: INFO/DEBUG(16421): ip afd46688 sp bea100e0 lr afd19471 pc afd15f40 cpsr 68000030
08-25 10:44:31.635: INFO/DEBUG(16421): d0 fffff7d600000d72 d1 40e3100000000800
08-25 10:44:31.635: INFO/DEBUG(16421): d2 40b9f00000000000 d3 c14fec0040535000
08-25 10:44:31.635: INFO/DEBUG(16421): d4 40e31000c182a600 d5 0000000000000000
08-25 10:44:31.635: INFO/DEBUG(16421): d6 4557200000071880 d7 45000000c502a000
08-25 10:44:31.635: INFO/DEBUG(16421): d8 0000000000000000 d9 4680000046800000
08-25 10:44:31.635: INFO/DEBUG(16421): d10 0000000042d2aaaa d11 0000000000000000
08-25 10:44:31.635: INFO/DEBUG(16421): d12 0000000000000000 d13 0000000000000000
08-25 10:44:31.635: INFO/DEBUG(16421): d14 0000000000000000 d15 0000000000000000
08-25 10:44:31.635: INFO/DEBUG(16421): d16 00000000000000a0 d17 40e631e000000000
08-25 10:44:31.635: INFO/DEBUG(16421): d18 3faeb851e0000000 d19 3fc3333340000000
08-25 10:44:31.635: INFO/DEBUG(16421): d20 3fe3333340000000 d21 3fd3333340000000
08-25 10:44:31.635: INFO/DEBUG(16421): d22 3fd51eb860000000 d23 40e01d100abe0000
08-25 10:44:31.635: INFO/DEBUG(16421): d24 40dd4c2013880000 d25 40ed4c1013880000
08-25 10:44:31.635: INFO/DEBUG(16421): d26 40cd4c4013880000 d27 0000000000000000
08-25 10:44:31.635: INFO/DEBUG(16421): d28 0002d4740002d474 d29 407c300000000000
08-25 10:44:31.635: INFO/DEBUG(16421): d30 0000000000000000 d31 3ff0000000000000
08-25 10:44:31.635: INFO/DEBUG(16421): scr 80000012
08-25 10:44:31.695: INFO/AudioFlinger(2573): stop output streamType (0, 1) for 1
08-25 10:44:31.695: DEBUG/AudioHardwareYamaha(2573): AudioStreamOut::setParameters(keyValuePairs="stop_output_streamtype=1")
08-25 10:44:31.735: INFO/DEBUG(16421): #00 pc 00015f40 /system/lib/libc.so
08-25 10:44:31.735: INFO/DEBUG(16421): #01 pc 000138b0 /system/lib/libc.so
08-25 10:44:31.735: INFO/DEBUG(16421): #02 pc 00014776 /system/lib/libc.so
08-25 10:44:31.735: INFO/DEBUG(16421): #03 pc 0005079c /system/lib/libskia.so
08-25 10:44:31.735: INFO/DEBUG(16421): #04 pc 0005089c /system/lib/libskia.so
08-25 10:44:31.740: INFO/DEBUG(16421): #05 pc 0007d164 /system/lib/libskia.so
08-25 10:44:31.740: INFO/DEBUG(16421): #06 pc 0007d220 /system/lib/libskia.so
08-25 10:44:31.740: INFO/DEBUG(16421): #07 pc 0007d360 /system/lib/libskia.so
08-25 10:44:31.740: INFO/DEBUG(16421): #08 pc 0007d808 /system/lib/libskia.so
08-25 10:44:31.740: INFO/DEBUG(16421): #09 pc 00080344 /system/lib/libskia.so
08-25 10:44:31.740: INFO/DEBUG(16421): code around pc:
08-25 10:44:31.740: INFO/DEBUG(16421): afd15f20 2c006824 e028d1fb b13368db c064f8df
08-25 10:44:31.740: INFO/DEBUG(16421): afd15f30 44fc2401 4000f8cc 49124798 25002027
08-25 10:44:31.740: INFO/DEBUG(16421): afd15f40 f7f57008 2106eb46 ecbaf7f6 460aa901
08-25 10:44:31.740: INFO/DEBUG(16421): afd15f50 f04f2006 95015380 95029303 e820f7f6
08-25 10:44:31.740: INFO/DEBUG(16421): afd15f60 462aa905 f7f62002 f7f5e82c 2106eb32
08-25 10:44:31.740: INFO/DEBUG(16421): code around lr:
08-25 10:44:31.745: INFO/DEBUG(16421): afd19450 4a0e4b0d e92d447b 589c41f0 26004680
08-25 10:44:31.745: INFO/DEBUG(16421): afd19460 686768a5 f9b5e006 b113300c 47c04628
08-25 10:44:31.745: INFO/DEBUG(16421): afd19470 35544306 37fff117 6824d5f5 d1ef2c00
08-25 10:44:31.745: INFO/DEBUG(16421): afd19480 e8bd4630 bf0081f0 000280cc ffffff88
08-25 10:44:31.745: INFO/DEBUG(16421): afd19490 b086b570 f602fb01 9004460c a804a901
08-25 10:44:31.745: INFO/DEBUG(16421): stack:
08-25 10:44:31.745: INFO/DEBUG(16421): bea100a0 afd42684
08-25 10:44:31.745: INFO/DEBUG(16421): bea100a4 000afba8
08-25 10:44:31.745: INFO/DEBUG(16421): bea100a8 00000015
08-25 10:44:31.745: INFO/DEBUG(16421): bea100ac afd18539 /system/lib/libc.so
08-25 10:44:31.745: INFO/DEBUG(16421): bea100b0 afd4272c
08-25 10:44:31.745: INFO/DEBUG(16421): bea100b4 afd426d8
08-25 10:44:31.745: INFO/DEBUG(16421): bea100b8 00000000
08-25 10:44:31.745: INFO/DEBUG(16421): bea100bc afd19471 /system/lib/libc.so
08-25 10:44:31.745: INFO/DEBUG(16421): bea100c0 00000001
08-25 10:44:31.745: INFO/DEBUG(16421): bea100c4 bea100f4
08-25 10:44:31.745: INFO/DEBUG(16421): bea100c8 bea102c0
08-25 10:44:31.745: INFO/DEBUG(16421): bea100cc 0000a000
08-25 10:44:31.745: INFO/DEBUG(16421): bea100d0 00646278
08-25 10:44:31.745: INFO/DEBUG(16421): bea100d4 afd18793 /system/lib/libc.so
08-25 10:44:31.745: INFO/DEBUG(16421): bea100d8 df002777
08-25 10:44:31.745: INFO/DEBUG(16421): bea100dc e3a070ad
08-25 10:44:31.745: INFO/DEBUG(16421): #00 bea100e0 00000000
08-25 10:44:31.745: INFO/DEBUG(16421): bea100e4 0017d908
08-25 10:44:31.745: INFO/DEBUG(16421): bea100e8 0017d8c0
08-25 10:44:31.745: INFO/DEBUG(16421): bea100ec 002b1d30
08-25 10:44:31.745: INFO/DEBUG(16421): bea100f0 bea102c0
08-25 10:44:31.745: INFO/DEBUG(16421): bea100f4 fffffbdf
08-25 10:44:31.745: INFO/DEBUG(16421): bea100f8 00646278
08-25 10:44:31.745: INFO/DEBUG(16421): bea100fc afd46470
08-25 10:44:31.745: INFO/DEBUG(16421): bea10100 002b1d30
08-25 10:44:31.745: INFO/DEBUG(16421): bea10104 afd138b5 /system/lib/libc.so
08-25 10:44:31.745: INFO/DEBUG(16421): #01 bea10108 0017d8c0
08-25 10:44:31.745: INFO/DEBUG(16421): bea1010c 002b1d30
08-25 10:44:31.750: INFO/DEBUG(16421): bea10110 ab217314
08-25 10:44:31.750: INFO/DEBUG(16421): bea10114 002b30f8
08-25 10:44:31.750: INFO/DEBUG(16421): bea10118 00646278
08-25 10:44:31.750: INFO/DEBUG(16421): bea1011c afd14779 /system/lib/libc.so
08-25 10:44:32.140: INFO/BootReceiver(2689): Copying /data/tombstones/tombstone_03 to DropBox (SYSTEM_TOMBSTONE)
08-25 10:44:32.145: INFO/DEBUG(16421): dumpstate /data/log/dumpstate_app_native.txt
08-25 10:44:32.150: INFO/dumpstate(17848): begin
08-25 10:44:32.165: INFO/dalvikvm(2689): threadid=4: reacting to signal 3
08-25 10:44:32.170: INFO/dalvikvm(2689): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.170: INFO/dalvikvm(2810): threadid=4: reacting to signal 3
08-25 10:44:32.170: INFO/dalvikvm(2810): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.170: INFO/dalvikvm(2832): threadid=4: reacting to signal 3
08-25 10:44:32.175: INFO/dalvikvm(2832): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.175: INFO/dalvikvm(2836): threadid=4: reacting to signal 3
08-25 10:44:32.175: INFO/dalvikvm(2836): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.175: INFO/dalvikvm(2837): threadid=4: reacting to signal 3
08-25 10:44:32.175: INFO/dalvikvm(2837): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.180: INFO/dalvikvm(2838): threadid=4: reacting to signal 3
08-25 10:44:32.180: INFO/dalvikvm(2838): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.180: INFO/dalvikvm(2840): threadid=4: reacting to signal 3
08-25 10:44:32.180: INFO/dalvikvm(2840): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.180: INFO/dalvikvm(2846): threadid=4: reacting to signal 3
08-25 10:44:32.200: ERROR/yamaha::media::Parameters(2573): SalesCode = INU
08-25 10:44:32.240: INFO/dalvikvm(2846): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.240: INFO/dalvikvm(2916): threadid=4: reacting to signal 3
08-25 10:44:32.245: INFO/dalvikvm(2916): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.245: INFO/dalvikvm(2962): threadid=4: reacting to signal 3
08-25 10:44:32.250: INFO/dalvikvm(2962): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.250: INFO/dalvikvm(3104): threadid=4: reacting to signal 3
08-25 10:44:32.250: INFO/dalvikvm(3104): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.250: INFO/dalvikvm(3238): threadid=4: reacting to signal 3
08-25 10:44:32.250: INFO/dalvikvm(3238): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.250: INFO/dalvikvm(3405): threadid=4: reacting to signal 3
08-25 10:44:32.255: INFO/dalvikvm(3405): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.255: INFO/dalvikvm(3461): threadid=4: reacting to signal 3
08-25 10:44:32.255: INFO/dalvikvm(3461): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.255: INFO/dalvikvm(3503): threadid=4: reacting to signal 3
08-25 10:44:32.255: INFO/dalvikvm(3503): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.255: INFO/dalvikvm(3574): threadid=4: reacting to signal 3
08-25 10:44:32.255: INFO/dalvikvm(3574): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.255: INFO/dalvikvm(3594): threadid=4: reacting to signal 3
08-25 10:44:32.260: INFO/dalvikvm(3594): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.260: INFO/dalvikvm(3602): threadid=4: reacting to signal 3
08-25 10:44:32.260: INFO/dalvikvm(3602): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.260: INFO/dalvikvm(3633): threadid=4: reacting to signal 3
08-25 10:44:32.265: INFO/dalvikvm(3633): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.265: INFO/dalvikvm(3644): threadid=4: reacting to signal 3
08-25 10:44:32.265: INFO/dalvikvm(3644): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.265: INFO/dalvikvm(5258): threadid=4: reacting to signal 3
08-25 10:44:32.270: INFO/dalvikvm(5258): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.270: INFO/dalvikvm(6665): threadid=4: reacting to signal 3
08-25 10:44:32.270: INFO/dalvikvm(6665): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.270: INFO/dalvikvm(12988): threadid=4: reacting to signal 3
08-25 10:44:32.275: INFO/dalvikvm(12988): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.275: INFO/dalvikvm(13199): threadid=4: reacting to signal 3
08-25 10:44:32.275: INFO/dalvikvm(13199): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.275: INFO/dalvikvm(13271): threadid=4: reacting to signal 3
08-25 10:44:32.275: INFO/dalvikvm(13271): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.275: INFO/dalvikvm(13304): threadid=4: reacting to signal 3
08-25 10:44:32.280: INFO/dalvikvm(13304): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.280: INFO/dalvikvm(13332): threadid=4: reacting to signal 3
08-25 10:44:32.280: INFO/dalvikvm(13332): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.280: INFO/dalvikvm(13342): threadid=4: reacting to signal 3
08-25 10:44:32.280: INFO/dalvikvm(13342): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.280: INFO/dalvikvm(13352): threadid=4: reacting to signal 3
08-25 10:44:32.280: INFO/dalvikvm(13352): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.280: INFO/dalvikvm(13366): threadid=4: reacting to signal 3
08-25 10:44:32.285: INFO/dalvikvm(13366): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.285: INFO/dalvikvm(13374): threadid=4: reacting to signal 3
08-25 10:44:32.285: INFO/dalvikvm(13374): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.285: INFO/dalvikvm(13403): threadid=4: reacting to signal 3
08-25 10:44:32.285: INFO/dalvikvm(13403): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.285: INFO/dalvikvm(13608): threadid=4: reacting to signal 3
08-25 10:44:32.285: INFO/dalvikvm(13608): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.290: INFO/dalvikvm(13866): threadid=4: reacting to signal 3
08-25 10:44:32.290: INFO/dalvikvm(13866): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.290: INFO/dalvikvm(13897): threadid=4: reacting to signal 3
08-25 10:44:32.290: INFO/dalvikvm(13897): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.290: INFO/dalvikvm(14304): threadid=4: reacting to signal 3
08-25 10:44:32.290: INFO/dalvikvm(14304): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.290: INFO/dalvikvm(14471): threadid=4: reacting to signal 3
08-25 10:44:32.295: INFO/dalvikvm(14471): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.295: INFO/dalvikvm(17236): threadid=4: reacting to signal 3
08-25 10:44:32.495: INFO/dalvikvm(17511): threadid=4: reacting to signal 3
08-25 10:44:32.500: INFO/dalvikvm(17511): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.505: INFO/dalvikvm(17583): threadid=4: reacting to signal 3
08-25 10:44:32.515: INFO/dalvikvm(17583): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.515: INFO/dalvikvm(17595): threadid=4: reacting to signal 3
08-25 10:44:32.520: INFO/dalvikvm(17595): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.520: INFO/dalvikvm(17620): threadid=4: reacting to signal 3
08-25 10:44:32.535: INFO/dalvikvm(17620): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.540: INFO/dalvikvm(17653): threadid=4: reacting to signal 3
08-25 10:44:32.550: INFO/dalvikvm(17653): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.550: INFO/dalvikvm(17664): threadid=4: reacting to signal 3
08-25 10:44:32.560: INFO/dalvikvm(17664): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.560: INFO/dalvikvm(17672): threadid=4: reacting to signal 3
08-25 10:44:32.570: INFO/dalvikvm(17672): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.570: INFO/dalvikvm(17689): threadid=4: reacting to signal 3
08-25 10:44:32.580: INFO/dalvikvm(17689): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.580: INFO/dalvikvm(17696): threadid=4: reacting to signal 3
08-25 10:44:32.600: INFO/dalvikvm(17696): Wrote stack traces to '/data/anr/traces.txt'
08-25 10:44:32.795: ERROR/lights(2689): write_int: path /sys/devices/virtual/misc/melfas_touchkey/brightness, value 2
08-25 10:44:32.795: WARN/PowerManagerService(2689): Timer 0x7->0x3|0x0
08-25 10:44:32.795: INFO/PowerManagerService(2689): Ulight 7->3|0
08-25 10:44:32.795: DEBUG/PowerManagerService(2689): setLightBrightness : mButtonLight : 0
08-25 10:44:33.295: WARN/dalvikvm(17236): threadid=4: spin on suspend #1 threadid=13 (pcf=0)
08-25 10:44:33.760: INFO/ALSAModule(2573): Terminated ALSA PLAYBACK device hifi
08-25 10:44:34.180: ERROR/yamaha::media::Parameters(2573): SalesCode = INU
08-25 10:44:35.955: DEBUG/dalvikvm(3104): GC_EXPLICIT freed 18K, 55% free 2593K/5703K, external 0K/0K, paused 37ms
08-25 10:44:36.025: DEBUG/VoldCmdListener(2565): asec list
08-25 10:44:37.095: INFO/dumpstate(17848): done
08-25 10:44:37.150: INFO/DEBUG(16421): debuggerd committing suicide to free the zombie!
08-25 10:44:37.170: INFO/DEBUG(17899): debuggerd: May 18 2011 13:55:14
08-25 10:44:37.270: INFO/ActivityManager(2689): Process com.test.android (pid 17236) has died.
08-25 10:44:37.285: INFO/WindowManager(2689): WIN DEATH: Window{40943ee0 com.test.android/com.test.android.activities.SecondScreenActivity paused=false}
08-25 10:44:37.290: INFO/WindowManager(2689): WIN DEATH: Window{40936210 com.test.android/com.test.android.activities.HomeScreenActivity paused=false}
08-25 10:44:37.290: INFO/WindowManager(2689): WIN DEATH: Window{4096f840 com.test.android/com.test.android.activities.ThirdScreenActivity paused=false}
08-25 10:44:37.290: INFO/WindowManager(2689): WIN DEATH: Window{409dea98 Select Language paused=false}
08-25 10:44:37.310: INFO/ActivityManager(2689): Start proc com.test.android for activity com.test.android/.activities.SecondScreenActivity: pid=17900 uid=10114 gids={3003, 1015}
最佳答案
堆栈跟踪开头的许多奇怪文本是 native 故障转储。由于其中一个 native 库中未处理的运行时错误而发生崩溃。错误发生是因为访问非映射地址 0xdeadbaad
:
08-25 10:44:31.635: INFO/DEBUG(16421): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr deadbaad
此错误应用程序进程终止并重新启动后。 SecondScreenActivity
被创建,然后它的状态从上次保存的状态恢复。
编辑:我认为问题不在您的代码中。似乎这是一个Android错误。这是错误报告:http://code.google.com/p/android/issues/detail?id=14498 .
本报告包含以下结论:
The APK is using Bitmaps from multiple threads, reusing it after it has been (or while it is being) recycled. The Skia graphics library is not completely thread-safe, and introducing additional synchronization is too expensive, so this won't be fixed in the platform.
So you need to be careful about what you
recycle()
.
关于android - ActivityManager 进程已死亡问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/7185509/
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自Gradle更新以来,我正在努力使这个项目达到标准。这是一个团队项目,它使用的是android-apt插件。我已经进行了必要的语法更改(编译->实现和apt->注释处理器),但是编译器仍在告诉我存在
我是android和kotlin的新手,所以请原谅要解决的一个非常简单的问题! 我已经使用导航体系结构组件创建了一个基本应用程序,使用了底部的导航栏和三个导航选项。每个导航选项都指向一个专用片段,该片
我目前正在使用 Facebook official SDK for Android . 我现在正在使用高级示例应用程序,但我不知道如何让它获取应用程序墙/流/状态而不是登录的用户。 这可能吗?在那种情
我在下载文件时遇到问题, 我可以在模拟器中下载文件,但无法在手机上使用。我已经定义了上网和写入 SD 卡的权限。 我在服务器上有一个 doc 文件,如果用户单击下载。它下载文件。这在模拟器中工作正常但
这个问题在这里已经有了答案: What is the difference between gravity and layout_gravity in Android? (22 个答案) 关闭 9
任何人都可以告诉我什么是 android 缓存和应用程序缓存,因为当我们谈论缓存清理应用程序时,它的作用是,缓存清理概念是清理应用程序缓存还是像内存管理一样主存储、RAM、缓存是不同的并且据我所知,缓
假设应用程序 Foo 和 Eggs 在同一台 Android 设备上。任一应用程序都可以获取设备上所有应用程序的列表。一个应用程序是否有可能知道另一个应用程序是否已经运行以及运行了多长时间? 最佳答案
我有点困惑,我只看到了从 android 到 pc 或者从 android 到 pc 的例子。我需要制作一个从两部手机 (android) 连接的 android 应用程序进行视频聊天。我在想,我知道
用于使用 Android 以编程方式锁定屏幕。我从 Stackoverflow 之前关于此的问题中得到了一些好主意,并且我做得很好,但是当我运行该代码时,没有异常和错误。而且,屏幕没有锁定。请在这段代
文档说: android:layout_alignParentStart If true, makes the start edge of this view match the start edge
我不知道这两个属性和高度之间的区别。 以一个TextView为例,如果我将它的layout_width设置为wrap_content,并将它的width设置为50 dip,会发生什么情况? 最佳答案
这两个属性有什么关系?如果我有 android:noHistory="true",那么有 android:finishOnTaskLaunch="true" 有什么意义吗? 最佳答案 假设您的应用中有
我是新手,正在尝试理解以下 XML 代码: 查看 developer.android.com 上的文档,它说“starStyle”是 R.attr 中的常量, public static final
在下面的代码中,为什么当我设置时单选按钮的外观会发生变化 android:layout_width="fill_parent" 和 android:width="fill_parent" 我说的是
很难说出这里要问什么。这个问题模棱两可、含糊不清、不完整、过于宽泛或夸夸其谈,无法以目前的形式得到合理的回答。如需帮助澄清此问题以便重新打开,visit the help center . 关闭 9
假设我有一个函数 fun myFunction(name:String, email:String){},当我调用这个函数时 myFunction('Ali', 'ali@test.com ') 如何
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