第一种方法
1
Intent intent = new Intent(Intent.ACTION_MAIN);
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intent.addCategory(Intent.CATEGORY_HOME);
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intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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startActivity(intent);
第二种方法
此方法其实不是主要是屏蔽Keycode_Back，让它不结束（finish()）Activity，直接显示HOME界面。
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PackageManager pm = getPackageManager();
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ResolveInfo homeInfo = pm.resolveActivity(new Intent(Intent.ACTION_MAIN)
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.addCategory(Intent.CATEGORY_HOME), 0);
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public boolean onKeyDown(int keyCode, KeyEvent event) {
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if (keyCode == KeyEvent.KEYCODE_BACK) {
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ActivityInfo ai = homeInfo.activityInfo;
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Intent startIntent = new Intent(Intent.ACTION_MAIN);
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startIntent.addCategory(Intent.CATEGORY_LAUNCHER);
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startIntent.setComponent(new ComponentName(ai.packageName,
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ai.name));
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startActivitySafely(startIntent);
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return true;
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} else
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return super.onKeyDown(keyCode, event);
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}
01
void startActivitySafely(Intent intent) {
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intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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try {
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startActivity(intent);
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} catch (ActivityNotFoundException e) {
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Toast.makeText(this, R.string.unabletoopensoftware,
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Toast.LENGTH_SHORT).show();
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} catch (SecurityException e) {
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Toast.makeText(this, R.string.unabletoopensoftware,
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Toast.LENGTH_SHORT).show();
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Log
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.e(
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TAG,
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Launcher does not have the permission to launch
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+ intent
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+. Make sure to create a MAIN intent-filterfor the corresponding activity
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+or use the exported attribute for thisactivity. ,
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e);
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}
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}
