我试图从android studio的editText字段中复制一些文本,但是当我这样做时,应用程序总是崩溃。复制工作很好,但应用程序从editText复制时会崩溃。
我假设它是字符串,并尝试将其转换为CharSequence,但仍然崩溃。我也尝试了从TextView复制,但没有成功,可能是造型的问题?
button3.setOnClickListener(
new Button.OnClickListener(){
@Override
public void onClick(View v) {
EditText editText = findViewById(R.id.editText);
ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
ClipData clip = ClipData.newPlainText("aaa",(CharSequence)editText);
clipboard.setPrimaryClip(clip);
}
}
);
堆栈跟踪:
2019-04-28 03:46:47.121 29744-29744/my.app E/AndroidRuntime: FATAL EXCEPTION: main
Process: my.app, PID: 29744
java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to java.lang.CharSequence
at my.app.MainActivity$3.onClick(MainActivity.java:68)
at android.view.View.performClick(View.java:6597)
at android.view.View.performClickInternal(View.java:6574)
at android.view.View.access$3100(View.java:778)
at android.view.View$PerformClick.run(View.java:25885)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
顺便说一句,MainActivity.java:68
是ClipData clip = ClipData.newPlainText("aaa",(CharSequence)editText);
发布于 2019-04-28 08:46:18
您不必使用ClipboardManager
或ClipData
从EditText
或TextView
进行复制,只需将此属性添加到TextView
或EditText
即可完成复制工作
android:textIsSelectable="true"
编辑
button3.setOnClickListener(
new Button.OnClickListener(){
@Override
public void onClick(View v) {
EditText editText = findViewById(R.id.editText);
String text = editText.getText();
ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
ClipData clip = ClipData.newPlainText("aaa",text);
clipboard.setPrimaryClip(clip);
}
}
);
https://stackoverflow.com/questions/55886068
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