BaseActivity.java
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package com.sunvote.xpadapp.base;
import android.Manifest;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.support.v4.content.ContextCompat;
import android.util.DisplayMetrics;
import android.view.KeyEvent;
import android.view.WindowManager;
import android.widget.Toast;
import com.sunvote.util.LogUtil;
public class BaseActivity extends FragmentActivity {
private String TAG = "BaseActivity";
public static final int FLAG_HOMEKEY_DISPATCHED = 0x80000000; //需要自己定义标志
private static final int READ_EXTERNAL_STORAGE = 101;
private static final int WRITE_EXTERNAL_STORAGE = 102;
private static final int CAMERA = 103;
private static final int ACCESS_COARSE_LOCATION = 103;
@Override
protected void onCreate(Bundle savedInstanceState) {
this.getWindow().setFlags(FLAG_HOMEKEY_DISPATCHED, FLAG_HOMEKEY_DISPATCHED);//关键代码
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON, WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
// if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.KITKAT){
// getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
// }
super.onCreate(savedInstanceState);
checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE);
checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE);
checkSelfPermission(Manifest.permission.CAMERA,CAMERA);
checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION,ACCESS_COARSE_LOCATION);
getScreenDensity_ByWindowManager();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
LogUtil.i(TAG,"onKeyDown keycode="+keyCode );
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
LogUtil.i(TAG,"KEYCODE_BACK");
return true;
case KeyEvent.KEYCODE_HOME:
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
}
@Override
public void onDetachedFromWindow() {
super.onDetachedFromWindow();
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
//返回true，不响应其他key
int keyCode= event.getKeyCode();
LogUtil.i(TAG,"dispatchKeyEvent keycode="+keyCode );
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
LogUtil.i(TAG,"KEYCODE_BACK");
return true;
case KeyEvent.KEYCODE_HOME:
if(event.isLongPress()){
moveTaskToBack(false);
}
return true;
}
return true;
}
public boolean checkSelfPermission(String permission, int requestCode) {
LogUtil.i(getClass().getSimpleName(), "checkSelfPermission " + permission + " " + requestCode);
if (ContextCompat.checkSelfPermission(this,
permission)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this,
new String[]{permission},
requestCode);
return false;
}
return true;
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode){
case WRITE_EXTERNAL_STORAGE:
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
} else {
finish();
}
break;
case READ_EXTERNAL_STORAGE:
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
} else {
}
case CAMERA:
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
} else {
Toast.makeText(this,"相机权限获取失败!",Toast.LENGTH_SHORT).show();
}
}
}
public void getScreenDensity_ByWindowManager(){
DisplayMetrics mDisplayMetrics = new DisplayMetrics();//屏幕分辨率容器
getWindowManager().getDefaultDisplay().getMetrics(mDisplayMetrics);
int width = mDisplayMetrics.widthPixels;
int height = mDisplayMetrics.heightPixels;
float density = mDisplayMetrics.density;
int densityDpi = mDisplayMetrics.densityDpi;
// showToast("Screen Ratio: ["+width+"x"+height+"],density="+density+",densityDpi="+densityDpi);
// showToast("Screen mDisplayMetrics: "+mDisplayMetrics);
LogUtil.i(TAG,"Screen Ratio: ["+width+"x"+height+"],density="+density+",densityDpi="+densityDpi);
LogUtil.i(TAG,"Screen mDisplayMetrics: "+mDisplayMetrics);
}
}