我正在尝试在windowManager服务中打开视频播放器。如果我使用图像而不是'VideoView'，一切正常。但是，如果我使用VideoView，那么我将得到这个例外。
01-06 12:17:46.237: E/AndroidRuntime(1129): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
01-06 12:17:46.237: E/AndroidRuntime(1129): at android.view.ViewRootImpl.setView(ViewRootImpl.java:563)
01-06 12:17:46.237: E/AndroidRuntime(1129): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:269)
01-06 12:17:46.237: E/AndroidRuntime(1129): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
01-06 12:17:46.237: E/AndroidRuntime(1129): at android.app.Dialog.show(Dialog.java:281)
01-06 12:17:46.237: E/AndroidRuntime(1129): at android.app.AlertDialog$Builder.show(AlertDialog.java:951)
01-06 12:17:46.237: E/AndroidRuntime(1129): at android.widget.VideoView$4.onError(VideoView.java:421)
01-06 12:17:46.237: E/AndroidRuntime(1129): at android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.java:2022)
我在Google搜索并修复了所有内容，但仍无效。
这是我的代码。
ChatHeadService
package henrychuang.tw.chatheadmsg;
import android.annotation.SuppressLint;
import android.app.Service;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.graphics.Point;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.VideoView;
public class ChatHeadService extends Service {
private WindowManager windowManager;
private RelativeLayout chatheadView, removeView;
private LinearLayout txtView, txt_linearlayout;
private ImageView removeImg;
private VideoView chatheadImg;
private TextView txt1;
private int x_init_cord, y_init_cord, x_init_margin, y_init_margin, iLife = 0;
private Point szWindow = new Point();
private boolean isLeft = true;
@SuppressLint("NewApi")
@SuppressWarnings("deprecation")
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
Log.d(Utility.LogTag, "ChatHeadService.onCreate()");
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
LayoutInflater inflater = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
removeView = (RelativeLayout)inflater.inflate(R.layout.remove, null);
WindowManager.LayoutParams paramRemove = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
PixelFormat.TRANSLUCENT);
paramRemove.gravity = Gravity.TOP | Gravity.LEFT;
removeView.setVisibility(View.GONE);
removeImg = (ImageView)removeView.findViewById(R.id.remove_img);
windowManager.addView(removeView, paramRemove);
chatheadView = (RelativeLayout) inflater.inflate(R.layout.chathead, null);
chatheadImg = (VideoView)chatheadView.findViewById(R.id.chathead_img);
String path="http://10.0.2.2/SILLI.mpg";
Uri uri=Uri.parse(path);
chatheadImg.setVideoURI(uri);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
windowManager.getDefaultDisplay().getSize(szWindow);
} else {
int w = windowManager.getDefaultDisplay().getWidth();
int h = windowManager.getDefaultDisplay().getHeight();
szWindow.set(w, h);
}
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.TOP | Gravity.LEFT;
params.x = 0;
params.y = 0;
windowManager.addView(chatheadView, params);
/*
Handler handler_longClick = new Handler();
Runnable runnable_longClick = new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
Log.d(Utility.LogTag, "Into runnable_longClick");
update();
}
};*/
chatheadView.setOnTouchListener(new View.OnTouchListener() {
long time_start = 0, time_end = 0;
boolean isLongclick = false, inBounded = false;
int remove_img_width = 0, remove_img_height = 0;
Handler handler_longClick = new Handler();
Runnable runnable_longClick = new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
Log.d(Utility.LogTag, "Into runnable_longClick");
isLongclick = true;
removeView.setVisibility(View.VISIBLE);
chathead_longclick();
}
};
@Override
public boolean onTouch(View v, MotionEvent event) {
WindowManager.LayoutParams layoutParams = (WindowManager.LayoutParams) chatheadView.getLayoutParams();
int x_cord = (int) event.getRawX();
int y_cord = (int) event.getRawY();
int x_cord_Destination, y_cord_Destination;
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
time_start = System.currentTimeMillis();
handler_longClick.postDelayed(runnable_longClick, 600);
remove_img_width = removeImg.getLayoutParams().width;
remove_img_height = removeImg.getLayoutParams().height;
x_init_cord = x_cord;
y_init_cord = y_cord;
x_init_margin = layoutParams.x;
y_init_margin = layoutParams.y;
if(txtView != null){
txtView.setVisibility(View.GONE);
myHandler.removeCallbacks(myRunnable);
}
break;
case MotionEvent.ACTION_MOVE:
int x_diff_move = x_cord - x_init_cord;
int y_diff_move = y_cord - y_init_cord;
x_cord_Destination = x_init_margin + x_diff_move;
y_cord_Destination = y_init_margin + y_diff_move;
if(isLongclick){
int x_bound_left = (szWindow.x - removeView.getWidth()) / 2 - 250;
int x_bound_right = (szWindow.x + removeView.getWidth()) / 2 + 100;
int y_bound_top = szWindow.y - (removeView.getHeight() + getStatusBarHeight()) - 200;
if((x_cord_Destination >= x_bound_left && x_cord_Destination <= x_bound_right) && y_cord_Destination >= y_bound_top){
inBounded = true;
layoutParams.x = (szWindow.x - chatheadView.getWidth()) / 2;
layoutParams.y = szWindow.y - (removeView.getHeight() + getStatusBarHeight()) + 70;
if(removeImg.getLayoutParams().height == remove_img_height){
removeImg.getLayoutParams().height = (int) (remove_img_height * 1.5);
removeImg.getLayoutParams().width = (int) (remove_img_width * 1.5);
WindowManager.LayoutParams param_remove = (WindowManager.LayoutParams) removeView.getLayoutParams();
int x_cord_remove = (int) ((szWindow.x - (remove_img_height * 1.5)) / 2);
int y_cord_remove = (int) (szWindow.y - ((remove_img_width * 1.5) + getStatusBarHeight() ));
param_remove.x = x_cord_remove;
param_remove.y = y_cord_remove;
windowManager.updateViewLayout(removeView, param_remove);
}
windowManager.updateViewLayout(chatheadView, layoutParams);
break;
}else{
inBounded = false;
removeImg.getLayoutParams().height = remove_img_height;
removeImg.getLayoutParams().width = remove_img_width;
WindowManager.LayoutParams param_remove = (WindowManager.LayoutParams) removeView.getLayoutParams();
int x_cord_remove = (szWindow.x - removeView.getWidth()) / 2;
int y_cord_remove = szWindow.y - (removeView.getHeight() + getStatusBarHeight() );
param_remove.x = x_cord_remove;
param_remove.y = y_cord_remove;
windowManager.updateViewLayout(removeView, param_remove);
}
}
layoutParams.x = x_cord_Destination;
layoutParams.y = y_cord_Destination;
windowManager.updateViewLayout(chatheadView, layoutParams);
break;
case MotionEvent.ACTION_UP:
isLongclick = false;
removeView.setVisibility(View.GONE);
removeImg.getLayoutParams().height = remove_img_height;
removeImg.getLayoutParams().width = remove_img_width;
handler_longClick.removeCallbacks(runnable_longClick);
if(inBounded){
if(MyDialog.active){
MyDialog.myDialog.finish();
}
stopService(new Intent(ChatHeadService.this, ChatHeadService.class));
inBounded = false;
break;
}
int x_diff = x_cord - x_init_cord;
int y_diff = y_cord - y_init_cord;
if(x_diff < 5 && y_diff < 5){
time_end = System.currentTimeMillis();
if((time_end - time_start) < 300){
chathead_click();
}
}
x_cord_Destination = x_init_margin + x_diff;
y_cord_Destination = y_init_margin + y_diff;
int x_start;
x_start = x_cord_Destination;
int BarHeight = getStatusBarHeight();
if (y_cord_Destination < 0) {
y_cord_Destination = 0;
} else if (y_cord_Destination + (chatheadView.getHeight() + BarHeight) > szWindow.y) {
y_cord_Destination = szWindow.y - (chatheadView.getHeight() + BarHeight );
}
layoutParams.y = y_cord_Destination;
inBounded = false;
resetPosition(x_start);
break;
default:
Log.d(Utility.LogTag, "chatheadView.setOnTouchListener -> event.getAction() : default");
break;
}
return true;
}
});
txtView = (LinearLayout)inflater.inflate(R.layout.txt, null);
txt1 = (TextView) txtView.findViewById(R.id.txt1);
txt_linearlayout = (LinearLayout)txtView.findViewById(R.id.txt_linearlayout);
WindowManager.LayoutParams paramsTxt = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
PixelFormat.TRANSLUCENT);
paramsTxt.gravity = Gravity.TOP | Gravity.LEFT;
txtView.setVisibility(View.GONE);
windowManager.addView(txtView, paramsTxt);
}
private void resetPosition(int x_cord_now) {
int w = chatheadView.getWidth();
if(x_cord_now == 0 || x_cord_now == szWindow.x - w){
} else if(x_cord_now + w / 2<= szWindow.x / 2){
isLeft = true;
// moveToLeft(x_cord_now);
} else if(x_cord_now + w / 2 > szWindow.x / 2){
isLeft = false;
// moveToRight(x_cord_now);
}
}
private void moveToLeft(int x_cord_now){
final int x = x_cord_now;
new CountDownTimer(500, 5) {
WindowManager.LayoutParams mParams = (WindowManager.LayoutParams) chatheadView.getLayoutParams();
public void onTick(long t) {
long step = (500 - t)/5;
mParams.x = (int)(double)bounceValue(step,x);
windowManager.updateViewLayout(chatheadView, mParams);
}
public void onFinish() {
mParams.x = 0;
windowManager.updateViewLayout(chatheadView, mParams);
}
}.start();
}
private void moveToRight(int x_cord_now){
final int x = x_cord_now;
new CountDownTimer(500, 5) {
WindowManager.LayoutParams mParams = (WindowManager.LayoutParams) chatheadView.getLayoutParams();
public void onTick(long t) {
long step = (500 - t)/5;
mParams.x = szWindow.x + (int)(double)bounceValue(step,x) - chatheadView.getWidth();
windowManager.updateViewLayout(chatheadView, mParams);
}
public void onFinish() {
mParams.x = szWindow.x - chatheadView.getWidth();
windowManager.updateViewLayout(chatheadView, mParams);
}
}.start();
}
private double bounceValue(long step, long scale){
double value = scale * java.lang.Math.exp(-0.055 * step) * java.lang.Math.cos(0.08 * step);
return value;
}
private int getStatusBarHeight() {
int statusBarHeight = (int) Math.ceil(25 * ChatHeadService.this.getResources().getDisplayMetrics().density);
return statusBarHeight;
}
private void chathead_click(){
if(MyDialog.active){
MyDialog.myDialog.finish();
}else{
Intent it = new Intent(ChatHeadService.this,MyDialog.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(it);
}
}
private void chathead_longclick(){
Log.d(Utility.LogTag, "Into ChatHeadService.chathead_longclick() ");
WindowManager.LayoutParams param_remove = (WindowManager.LayoutParams) removeView.getLayoutParams();
int x_cord_remove = (szWindow.x - removeView.getWidth()) / 2;
int y_cord_remove = szWindow.y - (removeView.getHeight() + getStatusBarHeight() );
param_remove.x = x_cord_remove;
param_remove.y = y_cord_remove;
windowManager.updateViewLayout(removeView, param_remove);
}
private void showMsg(String sMsg){
if(txtView != null && chatheadView != null ){
Log.d(Utility.LogTag, "ChatHeadService.showMsg -> sMsg=" + sMsg);
txt1.setText(sMsg);
myHandler.removeCallbacks(myRunnable);
WindowManager.LayoutParams param_chathead = (WindowManager.LayoutParams) chatheadView.getLayoutParams();
WindowManager.LayoutParams param_txt = (WindowManager.LayoutParams) txtView.getLayoutParams();
txt_linearlayout.getLayoutParams().height = chatheadView.getHeight();
txt_linearlayout.getLayoutParams().width = szWindow.x / 2;
if(isLeft){
param_txt.x = param_chathead.x + 100;
param_txt.y = param_chathead.y;
txt_linearlayout.setGravity(Gravity.LEFT | Gravity.CENTER_VERTICAL);
}else{
param_txt.x = param_chathead.x - szWindow.x / 2;
param_txt.y = param_chathead.y;
txt_linearlayout.setGravity(Gravity.RIGHT | Gravity.CENTER_VERTICAL);
}
txtView.setVisibility(View.VISIBLE);
windowManager.updateViewLayout(txtView, param_txt);
myHandler.postDelayed(myRunnable, 4000);
}
}
Handler myHandler = new Handler();
Runnable myRunnable = new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
if(txtView != null){
txtView.setVisibility(View.GONE);
}
}
};
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
Bundle bd = intent.getExtras();
if(bd != null){
final String sMsg = bd.getString(Utility.EXTRA_MSG);
Log.e(Utility.LogTag, "ChatHeadService.onStartCommand() -> EXTRA_MSG=" + sMsg);
if(iLife > 0)
showMsg(sMsg);
else{
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
showMsg(sMsg);
}
}, 300);
}
}
iLife++;
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
if(chatheadView != null){
windowManager.removeView(chatheadView);
}
if(txtView != null){
windowManager.removeView(txtView);
}
if(removeView != null){
windowManager.removeView(removeView);
}
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
Log.d(Utility.LogTag, "ChatHeadService.onBind()");
return null;
}
}
主要
package henrychuang.tw.chatheadmsg;
import henrychuang.tw.chatheadmsg.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Main extends Activity {
public static Button btnStartService, btnShowMsg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btnStartService = (Button)findViewById(R.id.btnStartService);
btnShowMsg = (Button)findViewById(R.id.btnMsg);
btnStartService.setOnClickListener(lst_StartService);
btnShowMsg.setOnClickListener(lst_ShowMsg);
}
Button.OnClickListener lst_StartService = new Button.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
startService(new Intent(Main.this, ChatHeadService.class));
}
};
Button.OnClickListener lst_ShowMsg = new Button.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
java.util.Date now = new java.util.Date();
String str = "test by henry " + new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(now);
Intent it = new Intent(Main.this, ChatHeadService.class);
it.putExtra(Utility.EXTRA_MSG, str);
startService(it);
}
};
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
}
}
MyDialog
package henrychuang.tw.chatheadmsg;
import henrychuang.tw.chatheadmsg.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
public class MyDialog extends Activity {
public static boolean active = false;
public static Activity myDialog;
EditText edt;
Button btn;
View top;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.dialog);
edt = (EditText) findViewById(R.id.dialog_edt);
btn = (Button) findViewById(R.id.dialog_btn);
top = (View)findViewById(R.id.dialog_top);
myDialog = MyDialog.this;
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String str = edt.getText().toString();
if(str.length() > 0){
// ChatHeadService.showMsg(MyDialog.this, str);
Intent it = new Intent(MyDialog.this, ChatHeadService.class);
it.putExtra(Utility.EXTRA_MSG, str);
startService(it);
}
}
});
top.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
finish();
}
});
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
active = true;
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
active = false;
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
active = false;
}
}
效用
package henrychuang.tw.chatheadmsg;
public class Utility {
public static String LogTag = "henrytest";
public static String EXTRA_MSG = "extra_msg";
}
答案 0 :(得分：1)
不读取所有代码：错误消息很可能是说您已经在某处使用了Application而不是Activity，因为需要Context。