onClick 保持停止
onClick keep stopping
public class MandarinPage extends AppCompatActivity {
Button b01,b02,b03;
VideoView Vv01;
MediaController mediaC;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mandarin_page);
b01=(Button)findViewById(R.id.button01);
b02=(Button)findViewById(R.id.button02);
b03=(Button)findViewById(R.id.button03);
Vv01=(VideoView)findViewById(R.id.videoView);
}
public void viedeplay(View v){
String videopath = "android.resource://a0.besta_e_learning/"+R.raw.sample_video;
Uri uri = Uri.parse(videopath); //URI stand for Uniform Resource Identifier
Vv01.setVideoURI(uri);
Vv01.setMediaController(mediaC);
mediaC.setAnchorView(Vv01);
Vv01.start();
}
when i clicked my play button my emulator show this.
有人可以帮我解决这个问题吗?有什么错误吗?当我点击按钮播放我的视频时,它显示应用程序一直停止我不知道是哪一部分出错了。
这里是错误。
E/AndroidRuntime: FATAL EXCEPTION: main
Process: a0.besta_e_learning, PID: 7198
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
at android.view.View.performClick(View.java:5610)
at android.view.View$PerformClick.run(View.java:22265)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5610)
at android.view.View$PerformClick.run(View.java:22265)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void
android.widget.MediaController.setAnchorView(android.view.View)' on a
null object reference
at a0.besta_e_learning.MandarinPage.viedeplay(MandarinPage.java:32)
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5610)
at android.view.View$PerformClick.run(View.java:22265)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
我认为错误在这一行..尝试写视频的视频扩展
String videopath =
"android.resource://a0.besta_e_learning/"+R.raw.sample_video.mp4;
或
String videopath =
"android.resource://a0.besta_e_learning/"+R.raw.sample_video.3gp;
试试这个代码可能会有帮助
MediaController mediaC = new MediaController(this);
Vv01.setMediaController(mediaC);
public class MandarinPage extends AppCompatActivity {
Button b01,b02,b03;
VideoView Vv01;
MediaController mediaC;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mandarin_page);
b01=(Button)findViewById(R.id.button01);
b02=(Button)findViewById(R.id.button02);
b03=(Button)findViewById(R.id.button03);
Vv01=(VideoView)findViewById(R.id.videoView);
}
public void viedeplay(View v){
String videopath = "android.resource://a0.besta_e_learning/"+R.raw.sample_video;
Uri uri = Uri.parse(videopath); //URI stand for Uniform Resource Identifier
Vv01.setVideoURI(uri);
Vv01.setMediaController(mediaC);
mediaC.setAnchorView(Vv01);
Vv01.start();
}
when i clicked my play button my emulator show this.
有人可以帮我解决这个问题吗?有什么错误吗?当我点击按钮播放我的视频时,它显示应用程序一直停止我不知道是哪一部分出错了。
这里是错误。
E/AndroidRuntime: FATAL EXCEPTION: main Process: a0.besta_e_learning, PID: 7198 java.lang.IllegalStateException: Could not execute method for android:onClick at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293) at android.view.View.performClick(View.java:5610) at android.view.View$PerformClick.run(View.java:22265) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6077) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) Caused by: java.lang.reflect.InvocationTargetException at java.lang.reflect.Method.invoke(Native Method) at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) at android.view.View.performClick(View.java:5610) at android.view.View$PerformClick.run(View.java:22265) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6077) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.MediaController.setAnchorView(android.view.View)' on a null object reference at a0.besta_e_learning.MandarinPage.viedeplay(MandarinPage.java:32) at java.lang.reflect.Method.invoke(Native Method) at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) at android.view.View.performClick(View.java:5610) at android.view.View$PerformClick.run(View.java:22265) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6077) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
我认为错误在这一行..尝试写视频的视频扩展
String videopath =
"android.resource://a0.besta_e_learning/"+R.raw.sample_video.mp4;
或
String videopath =
"android.resource://a0.besta_e_learning/"+R.raw.sample_video.3gp;
试试这个代码可能会有帮助
MediaController mediaC = new MediaController(this);
Vv01.setMediaController(mediaC);