分分钟教你集成沉浸式侧滑关闭Activity

网上搜索侧滑关闭Activity，几乎没有系统状态栏跟随页面一起联动的，有明显的撕裂感，而这里则是状态栏跟随页面联动的，说来集成也是简单，等会你就知道了。

个人习惯，写博客前喜欢先截图

1.首先以项目的形式导入到你的项目中

2.然后在你要侧滑的Activity集成SwipeBackActivity，注意只要集成就好的，其他的什么都不要你写，就能实现侧滑了

下面列出代码： Mainactivity.java

public class MainActivity extends AppCompatActivity {
    private TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView = (TextView) findViewById(R.id.text);
    }

    public void click(View view) {
        if (view.getId() == R.id.button) {
            startActivity(new Intent(MainActivity.this, SecondActivity.class));
        } else {
            startActivityForResult(new Intent(MainActivity.this, ThirdActivity.class), 1);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        String result = data.getStringExtra("result");
        if (requestCode == 1 && resultCode == 0) {
            textView.setText(result);
        }
    }
}

SecondActivity.java

public class SecondActivity extends SwipeBackActivity {
    private ViewPager viewPager;
    private int []imageIdArray;//图片资源的数组
    private List<View> viewList;//图片资源的集合

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        viewPager = (ViewPager)findViewById(R.id.viewpager);

        setStatusBarColor(getResources().getColor(R.color.colorPrimary));

        imageIdArray = new int[]{R.drawable.a, R.drawable.b, R.drawable.c, R.drawable.d};
        viewList = new ArrayList<>();
        //获取一个Layout参数，设置为全屏
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT);
        //循环创建View并加入到集合中
        int len = imageIdArray.length;
        for (int i = 0;i<len;i++){
            //new ImageView并设置全屏和图片资源
            ImageView imageView = new ImageView(this);
            imageView.setLayoutParams(params);
            imageView.setBackgroundResource(imageIdArray[i]);

            //将ImageView加入到集合中
            viewList.add(imageView);
        }
        viewPager.setAdapter(new ViewPagerAdapter(viewList));
    }
}

ThirdActivity.java

public class ThirdActivity extends SwipeBackActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_third);
    }

    @Override
    public void dothingBeforeFinish() {//这里是你要返回一些数据个启动的那个Activity，你可以在此做操作
        super.dothingBeforeFinish();
        Intent intent = new Intent();
        intent.putExtra("result", "来自ThirdActivity返回的值");
        setResult(0, intent);
    }
}

代码是不是很简单，这样就轻易的实现了沉浸式侧滑了。至于侧滑的Activity状态栏为什么是灰色的，是因为我在SwipeBackActivity中写死了，你可以修改此颜色。通过 setStatusBarColor(getResources().getColor(R.color.colorPrimary)); 好了，在此附上github源码，喜欢的请start、fork。 https://github.com/DyncKathline/SwipeBackLayout

转载请注明出处，谢谢！