Android預設桌面設定終級大招
最近研究桌面程式開發，遇到一個難題，就是按Home鍵沒法選擇自己的桌面作為預設桌面，經過一番辛苦的查詢組合，終於從各個旮旯挖出程式碼，然後組合修改，除錯，終於修成正果。各位看官，直接看程式碼：
import android.app.Activity;
import android.app.WallpaperManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.provider.Contacts;
import android.provider.Settings;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.widget.GridLayout;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.RelativeSizeSpan;
import android.text.style.SuperscriptSpan;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.TypedValue;
import android.view.KeyEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.DigitalClock;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.disney.sclocker.R;
import com.disney.sclocker.alarm.ClockAlarmActivity;
import com.disney.sclocker.locker.ScreenLockService;
import com.disney.sclocker.util.Utils;
import com.disney.sclocker.widget.DisneyAnalogClockV1;
import com.disney.sclocker.widget.GuideViewPager;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
public class DesktopActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_desktop);
//HOME鍵偵測
IntentFilter homeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
registerReceiver(homeReceiver, homeFilter);
Log.d("123", "android.os.Build.MANUFACTURER=" + android.os.Build.MANUFACTURER);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
return true;
case KeyEvent.KEYCODE_HOME:
return true;
}
return super.onKeyDown(keyCode, event);
}
//Home鍵偵測---[----
private final BroadcastReceiver homeReceiver = new BroadcastReceiver() {
final String SYS_KEY = "reason"; // 標註下這裡必須是這麼一個字串值
final String SYS_HOME_KEY = "homekey";// 標註下這裡必須是這麼一個字串值
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
String reason = intent.getStringExtra(SYS_KEY);
if (reason != null && reason.equals(SYS_HOME_KEY)) {
Log.i("TT", "home鍵監聽");
String currentHome = getHomeLauncher();
Log.i("TT", "currentHome="+currentHome);
if (isDefaultHome()) {
return;
}
setDefaultL();
}
}
}
};
private void setDefaultL(){
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory("android.intent.category.HOME");
try {
intent.setComponent(new ComponentName("android","com.android.internal.app.ResolverActivity"));
startActivity(intent);
}catch (Exception e){//這裡就是為了處置華為手機的
try {
intent.setComponent(new ComponentName("com.huawei.android.internal.app", "com.huawei.android.internal.app.HwResolverActivity"));//這個類有些華為手機找不到
startActivity(intent);
} catch (Exception e1){
e1.printStackTrace();
try {
startHuaweiSettingActOfDefLauncher();//開啟桌面設定
}catch(Exception e2){
e2.printStackTrace();
intent = new Intent(Settings.ACTION_APPLICATION_SETTINGS);//還不行，就只能應用程式設定了
startActivity(intent);
}
}
}
}
/**
* 判斷自己是否為預設桌面
*/
public final boolean isDefaultHome() {
Intent intent = new Intent(Intent.ACTION_MAIN);//Intent.ACTION_VIEW
intent.addCategory("android.intent.category.HOME");
intent.addCategory("android.intent.category.DEFAULT");
PackageManager pm = getPackageManager();
ResolveInfo info = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
boolean isDefault = getPackageName().equals(info.activityInfo.packageName);
return isDefault;
}
public void startHuaweiSettingActOfDefLauncher() {
IntentFilter localIntentFilter = new IntentFilter();
localIntentFilter.addAction(Intent.ACTION_MAIN);//"android.intent.action.MAIN"
localIntentFilter.addCategory(Intent.CATEGORY_HOME);//"android.intent.category.HOME"
Intent localIntent3 = new Intent(localIntentFilter.getAction(0));
localIntent3.addCategory(localIntentFilter.getCategory(0));
Intent localIntent4 = new Intent();
localIntent4.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
localIntent4.setClassName("com.android.settings", "com.android.settings.Settings$PreferredSettingsActivity");
localIntent4.putExtra("preferred_app_package_name", getPackageName());
localIntent4.putExtra("preferred_app_class_name", DesktopActivity.class.getName());
localIntent4.putExtra("is_user_confirmed", true);
localIntent4.putExtra("preferred_app_intent", localIntent3);
localIntent4.putExtra("preferred_app_intent_filter", localIntentFilter);
localIntent4.putExtra("preferred_app_label", "預設桌面設定");
startActivity(localIntent4);
}
private String getHomeLauncher() {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
ResolveInfo resolveInfo = getPackageManager().resolveActivity(intent, 0);
String currentHomePackage = resolveInfo.activityInfo.packageName;
return currentHomePackage;
}
@Override
protected void onDestroy() {
unregisterReceiver(homeReceiver);
super.onDestroy();
}
}