Android動態顯示和隱藏狀態列
簡述:
View類提供了setSystemUiVisibility和getSystemUiVisibility方法,這兩個方法實現對狀態列的動態顯示或隱藏的操作,以及獲取狀態列當前可見性。
setSystemUiVisibility方法傳入的實參分析:
setSystemUiVisibility(int visibility)方法可傳入的實參為:
1. View.SYSTEM_UI_FLAG_VISIBLE:顯示狀態列,
Activity不全屏顯示(恢復到有狀態的正常情況)。
2. View.INVISIBLE:隱藏狀態列,同時Activity會伸展全屏顯示。
3. View.SYSTEM_UI_FLAG_FULLSCREEN:Activity全屏顯示,且狀態列被隱藏覆蓋掉。
4. View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN:Activity全屏顯示,但狀態列不會被隱藏覆蓋,狀態列依然可見,Activity頂端佈局部分會被狀態遮住。
5. View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION:效果同View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
6. View.SYSTEM_UI_LAYOUT_FLAGS:效果同View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
7. View.SYSTEM_UI_FLAG_HIDE_NAVIGATION:隱藏虛擬按鍵(導航欄)。有些手機會用虛擬按鍵來代替物理按鍵。
8. View.SYSTEM_UI_FLAG_LOW_PROFILE:狀態列顯示處於低能顯示狀態(low profile模式),狀態列上一些圖示顯示會被隱藏。
相關程式碼:
package com.administrator.statubarapplication; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.LinearLayout; import android.widget.TextView; public class MainActivity extends Activity implements View.OnClickListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); assignViews(); setOnClicks(); } private void setOnClicks() { mButton1.setOnClickListener(this); mButton2.setOnClickListener(this); mButton3.setOnClickListener(this); mButton4.setOnClickListener(this); mButton5.setOnClickListener(this); mButton6.setOnClickListener(this); mButton7.setOnClickListener(this); } private LinearLayout mMain; private TextView mTextview; private Button mButton1; private Button mButton2; private Button mButton3; private Button mButton4; private Button mButton5; private Button mButton6; private Button mButton7; private void assignViews() { mMain = (LinearLayout) findViewById(R.id.main); mTextview = (TextView) findViewById(R.id.textview); mButton1 = (Button) findViewById(R.id.button1); mButton2 = (Button) findViewById(R.id.button2); mButton3 = (Button) findViewById(R.id.button3); mButton4 = (Button) findViewById(R.id.button4); mButton5 = (Button) findViewById(R.id.button5); mButton6 = (Button) findViewById(R.id.button6); mButton7 = (Button) findViewById(R.id.button7); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.button1: //Activity全屏顯示,且狀態列被隱藏覆蓋掉 mMain.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN); mTextview.setText("Activity全屏顯示,且狀態列被隱藏覆蓋掉\nView.SYSTEM_UI_FLAG_FULLSCREEN"); break; case R.id.button2: mMain.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE); mTextview.setText("恢復到有狀態的正常情況\nView.SYSTEM_UI_FLAG_VISIBLE"); break; case R.id.button3: mMain.setSystemUiVisibility(View.INVISIBLE); mTextview.setText("//隱藏狀態列,同時Activity會伸展全屏顯示\nView.INVISIBLE"); break; case R.id.button4: mMain.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN); mTextview.setText("Activity全屏顯示,但狀態列不會被隱藏覆蓋,狀態列依然可見,Activity頂端佈局部分會被狀態遮\nView" + ".SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN \n View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION"); break; case R.id.button5: mMain.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN); mTextview.setText("Activity全屏顯示,狀態列透明\nView.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION"); break; case R.id.button6: mMain.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION); mTextview.setText("隱藏虛擬按鍵\nView.SYSTEM_UI_FLAG_HIDE_NAVIGATION"); break; case R.id.button7: mMain.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE); mTextview.setText("狀態列低能顯示,有一些會被隱藏\nView.SYSTEM_UI_FLAG_LOW_PROFILE"); break; default: break; } } }