我试图使用整数数组保存一些块覆盖,这只是节省块执行的次数.但是,出于某种原因,当我尝试写入我创建的一些文件时(例如,我在Eclipse中专门制作并放在项目目录中的"BlockForHelper.txt"),我收到此错误:
java.io.FileNotFoundException: /nfs/guille/groce/users/nicholsk/workspace3/SQLTest/BlockForTest: open failed: ENOENT (No such file or directory)
at libcore.io.IoBridge.open(IoBridge.java:416)
at java.io.FileOutputStream.<init>(FileOutputStream.java:88)
at java.io.FileOutputStream.<init>(FileOutputStream.java:73)
at com.example.sql2.SQLTest.blockCoverage(SQLTest.java:149)
at com.example.sql2.test.SQLTestCase.testSuite(SQLTestCase.java:41)
at java.lang.reflect.Method.invokeNative(Native Method)
at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:214)
at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:199)
at android.test.ActivityInstrumentationTestCase2.runTest(ActivityInstrumentationTestCase2.java:192)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:190)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:175)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1584)
Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
at libcore.io.Posix.open(Native Method)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
at libcore.io.IoBridge.open(IoBridge.java:400)
... 18 more
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并给我错误:
public void blockCoverage() throws IOException
{
String coverage = "";
for (int x = 0; x < 20; x++)
coverage …Run Code Online (Sandbox Code Playgroud) 如何创建一个单独的类,其中定义所有关于齐射和另一个活动,我们直接传递URL,CONTEXT和获取响应...
如您所知,Google Places API允许您输入搜索框并在下拉菜单中获取建议的地址.
在大多数示例中,我看到人们将Google Places API与AutoCompleteTextView一起使用,以便在下拉列表中显示自动填充建议.我真正想要的是填写RecyclerView的建议.这样做的正确方法是什么?
我有一组活动,如A,B,C,D.如果A是家庭活动,我想通过将Extras发送到不同活动的活动A来发送值.
来自B:
Intent intent = new Intent(B.this, A.class);
intent.putExtra("from_B", true);
startActivity(intent)
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来自C:
Intent intent = new Intent(C.this, A.class);
intent.putExtra("from_C", true);
startActivity(intent)
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来自D:
Intent intent = new Intent(D.this, A.class);
intent.putExtra("from_D", true);
startActivity(intent)
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在活动A:
if (getIntent().getExtras() != null) {
isCreate = (boolean) getIntent().getSerializableExtra("-----");
}
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有人可以帮助我在活动A中保留(------)的位置,以便确定它被调用的活动